Rucksack type suitcase I can put under seat on plane

[wondabar]

I was recently on a plane and saw some a people walk off with great-looking suitcases they could strap on their back and which seemed to adhere to the under seat requirements. Can anyone recommend some nice ones that can fit enough for a few days away?

I have this beauty for underseat. Can't beat Cabin Max IMO.

https://cabinmax.com/collections/hybrid-2/products/travel-hack-30l-hybrid-trolley-backpack

I also have the Primark one linked above, which is just as good as the Cabin Max, but I bought the CMax bag before I saw the Primark one! I use the Primark for going into town shopping. I always end up like a camel on the tram so it's bloody great for heavy shopping and easy to pull along.

Am I right in thinking the Cabin Max you featured @wimonnzyis too big for Ryanair ?

That one is, though there's quite a good selection here:

Ryanair Free Bags | Compliant Underseat Bags and Cases – Cabin Max

The 36l CabinZero (45 x 31 x 20) meets the EasyJet under seat requirement (45 x 36 x 20).

The compression straps are handy too. I can fit a good few days worth of clothes plus a day sack into it.

Also have some CabinMax ones - they do a good Ryanair sized one.

Thank you @upsofloating